How to call webservices with ASP.NET at Run time?

1. 一般情况下，我们都用HttpWebRequest来调用WebServices.

建立WebServices:

代码

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Web;
using  System.Web.Services;
using  System.Web.Script.Services;
using  System.Runtime.Serialization;

///   <summary>
///  Summary description for CustomerWebService
///   </summary>
[WebService(Namespace  =   " http://tempuri.org/ " )]
[WebServiceBinding(ConformsTo  =  WsiProfiles.BasicProfile1_1)]
//  To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
//  [System.Web.Script.Services.ScriptService]
[ScriptService]
public   class  CustomerWebService : System.Web.Services.WebService
{
     public  CustomerWebService()
    {
         // Uncomment the following line if using designed components 
         // InitializeComponent(); 
    }

     // [WebMethod]
     // public string HelloWorld() {
     //     return "Hello World";
     // }
    [ScriptMethod]
    [WebMethod]
     public   string  Register( long  id,  string  data1)
    {
         return   " ID.CUSTOMER " ;
    }
    [ScriptMethod]
    [WebMethod]
     public   string  HelloWorld(Person p)
    {
         return  p.Name;
    }
}
[DataContract]
public   class  Person
{
    [DataMember]
     public   string  Name {  get ;  set ; }
}

 

在IE中输入webservices地址(http://localhost:8485/MySite/CustomerWebService.asmx?op=HelloWorld)，可看到调用该services的soap消息格式.

代码

POST /MySite/CustomerWebService.asmx HTTP/1.1
Host: localhost
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://tempuri.org/HelloWorld"

<? xml version="1.0" encoding="utf-8" ?>
< soap:Envelope  xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"  xmlns:xsd ="http://www.w3.org/2001/XMLSchema"  xmlns:soap ="http://schemas.xmlsoap.org/soap/envelope/" >
   < soap:Body >
     < HelloWorld  xmlns ="http://tempuri.org/" >
       < p >
         < Name > string </ Name >
       </ p >
     </ HelloWorld >
   </ soap:Body >
</ soap:Envelope >

 

2.调用webServices

 

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.IO;
using System.Security.Cryptography.X509Certificates;
using System.Net.Security;
using System.Text;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(OnValidationCallback);
        try
        {
            //string param = " <? xml version=\"1.0\" encoding=\"utf-8\" ?> ";
            StringBuilder strb = new StringBuilder();
            strb.Append(" < soap:Envelope  xmlns:xsi =\"http://www.w3.org/2001/XMLSchema-instance\"  xmlns:xsd =\"http://www.w3.org/2001/XMLSchema\"  xmlns:soap =\"http://schemas.xmlsoap.org/soap/envelope/\">");
   strb.Append("<soap:Body > ");
    strb.Append(" < HelloWorld  xmlns =\"http://tempuri.org/\">");
       strb.Append("<p > ");
        strb.Append(" < Name > Personss </ Name > ");
      strb.Append(" </ p > ");
    strb.Append(" </ HelloWorld > ");
  strb.Append(" </ soap:Body > ");
strb.Append(" </ soap:Envelope > ");
            string param=strb.ToString();
            byte[] bs = Encoding.UTF8.GetBytes(param);
            HttpWebRequest myRequest =
                (HttpWebRequest)WebRequest.Create(
                "http://localhost:8485/MySite/CustomerWebService.asmx");
            myRequest.Method = "POST";
            myRequest.ContentType = "text/xml; charset=utf-8";
            myRequest.Headers.Add("SOAPAction", "http://tempuri.org/HelloWorld");
            myRequest.ContentLength = bs.Length;
            using (Stream reqStream = myRequest.GetRequestStream())
            {
                reqStream.Write(bs, 0, bs.Length);
            }
            using (HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse())
            {

                StreamReader sr = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
                string responseString = sr.ReadToEnd();
                Response.Write("结果：" + responseString);
            }
        }
        catch (Exception ex)
        {
            Response.Write(System.DateTime.Now.ToShortTimeString()
                + "LBS EXCEPTION:" + ex.Message);
            Response.Write(ex.StackTrace);
        }
    }
    public bool OnValidationCallback(object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors errors)
    {
        return true;
    }

}

 

如果出现500内部服务器错误:

ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(OnValidationCallback);
 public bool OnValidationCallback(object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors errors)
    {
        return true;
    }